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Dark neutrinos and a three-portal connection to the standard model

机译：黑暗中微子和标准模型的三门网

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摘要

We introduce a dark neutrino sector which respects a hidden U ( 1 ) ′ gauge symmetry, subsequently broken by the vacuum expectation value of a dark scalar. The model is a self-consistent realization of an extended hidden sector that communicates with the standard model only via the three renormalizable portals, namely, neutrino, vector and scalar mixing. The interplay between portal couplings leads to several novel signatures in heavy neutrino, dark photon, and dark scalar searches, typically characterized by multileptons plus missing energy and displaced vertices. A striking signature arises in kaon factories such as NA62, where K + → ? α + ν ? β + ? β ? decays could reveal a heavy neutrino and a light dark photon resonance above backgrounds. Given the open parameter space, we also comment on recent ideas to explain outstanding experimental anomalies, and how they would fit into our proposed model. A minimal extension of the model, possibly motivated by anomaly cancellation, can accommodate a dark matter candidate strongly connected to the neutrino sector.
机译：我们介绍了一个偏见的暗中微子扇区，致偏见隐藏的U（1）尺对称，随后被黑标量的真空期望值破坏。该模型是一个自一致的隐藏扇区的实现，只能通过三个更正的门户与标准模型通信，即中微子，矢量和标量混合。门户耦合之间的相互作用导致重中微子，深光子和暗标量搜索的几个新签名，通常以多壳加上缺失的能量和位移顶点为特征。在Kaon工厂（如NA62）中出现了一个醒目的签名，其中K +→ α+ν？ β+？ β？衰变可以揭示一个沉重的中微子和背景上方的浅色光子共振。鉴于开放参数空间，我们还评论最近的想法来解释出色的实验异常，以及如何适应我们所提出的模型。模型的最小延伸，可能是由异常取消的激励，可以容纳强烈连接到中微子部门的暗物质候选者。

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